Add a step-by-step example to familiarise students with computer simulations: example: - start with coin-tossing: https://medium.com/analytics-vidhya/monte-carlo-simulation-with-python-724ec381ae6e - or with area of circle: https://p4a.seas.gwu.edu/2019-Fall/L15-monte-carlo-methods.html#3_Monte_Carlo_(pi) - and then finalising with coupon Collector's problem